Add specific serializer for SimpleReplicatedLogEntry

[controller.git] / opendaylight / md-sal / sal-akka-raft / src / main / java / org / opendaylight / controller / cluster / raft / ReplicatedLogImpl.java

diff --git a/opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/ReplicatedLogImpl.java b/opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/ReplicatedLogImpl.java
index c81ecfbd218f7f211237d3aaf3feb05c99b41cc9..764bce1ddb97aa4af14620736a5e286d64d1a87a 100644 (file)
--- a/opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/ReplicatedLogImpl.java
+++ b/opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/ReplicatedLogImpl.java
@@ -11,24 +11,22 @@ import akka.japi.Procedure;
 import com.google.common.base.Preconditions;
 import java.util.Collections;
 import java.util.List;
+import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
 import org.opendaylight.controller.cluster.raft.persisted.DeleteEntries;
+import org.opendaylight.controller.cluster.raft.persisted.Snapshot;
 
 /**
  * Implementation of ReplicatedLog used by the RaftActor.
  */
-class ReplicatedLogImpl extends AbstractReplicatedLogImpl {
+final class ReplicatedLogImpl extends AbstractReplicatedLogImpl {
     private static final int DATA_SIZE_DIVIDER = 5;
 
-    private final Procedure<DeleteEntries> deleteProcedure = new Procedure<DeleteEntries>() {
-        @Override
-        public void apply(final DeleteEntries notUsed) {
-        }
-    };
-
     private final RaftActorContext context;
     private long dataSizeSinceLastSnapshot = 0L;
 
-    private ReplicatedLogImpl(final long snapshotIndex, final long snapshotTerm, final List<ReplicatedLogEntry> unAppliedEntries,
+    private ReplicatedLogImpl(final long snapshotIndex, final long snapshotTerm,
+            final List<ReplicatedLogEntry> unAppliedEntries,
             final RaftActorContext context) {
         super(snapshotIndex, snapshotTerm, unAppliedEntries, context.getId());
         this.context = Preconditions.checkNotNull(context);
@@ -47,8 +45,8 @@ class ReplicatedLogImpl extends AbstractReplicatedLogImpl {
     public boolean removeFromAndPersist(final long logEntryIndex) {
         // FIXME: Maybe this should be done after the command is saved
         long adjustedIndex = removeFrom(logEntryIndex);
-        if(adjustedIndex >= 0) {
-            context.getPersistenceProvider().persist(new DeleteEntries(adjustedIndex), deleteProcedure);
+        if (adjustedIndex >= 0) {
+            context.getPersistenceProvider().persist(new DeleteEntries(adjustedIndex), NoopProcedure.instance());
             return true;
         }
 
@@ -56,17 +54,17 @@ class ReplicatedLogImpl extends AbstractReplicatedLogImpl {
     }
 
     @Override
-    public void appendAndPersist(final ReplicatedLogEntry replicatedLogEntry) {
-        appendAndPersist(replicatedLogEntry, null);
+    public boolean shouldCaptureSnapshot(final long logIndex) {
+        final ConfigParams config = context.getConfigParams();
+        final long journalSize = logIndex + 1;
+        final long dataThreshold = context.getTotalMemory() * config.getSnapshotDataThresholdPercentage() / 100;
+
+        return journalSize % config.getSnapshotBatchCount() == 0 || getDataSizeForSnapshotCheck() > dataThreshold;
     }
 
     @Override
     public void captureSnapshotIfReady(final ReplicatedLogEntry replicatedLogEntry) {
-        final ConfigParams config = context.getConfigParams();
-        final long journalSize = replicatedLogEntry.getIndex() + 1;
-        final long dataThreshold = context.getTotalMemory() * config.getSnapshotDataThresholdPercentage() / 100;
-
-        if (journalSize % config.getSnapshotBatchCount() == 0 || getDataSizeForSnapshotCheck() > dataThreshold) {
+        if (shouldCaptureSnapshot(replicatedLogEntry.getIndex())) {
             boolean started = context.getSnapshotManager().capture(replicatedLogEntry,
                     context.getCurrentBehavior().getReplicatedToAllIndex());
             if (started && !context.hasFollowers()) {
@@ -95,35 +93,31 @@ class ReplicatedLogImpl extends AbstractReplicatedLogImpl {
     }
 
     @Override
-    public void appendAndPersist(final ReplicatedLogEntry replicatedLogEntry,
-            final Procedure<ReplicatedLogEntry> callback)  {
+    public boolean appendAndPersist(@Nonnull final ReplicatedLogEntry replicatedLogEntry,
+            @Nullable final Procedure<ReplicatedLogEntry> callback, final boolean doAsync)  {
 
         context.getLogger().debug("{}: Append log entry and persist {} ", context.getId(), replicatedLogEntry);
 
-        // FIXME : By adding the replicated log entry to the in-memory journal we are not truly ensuring durability of the logs
-        if(!append(replicatedLogEntry)) {
-            return;
+        if (!append(replicatedLogEntry)) {
+            return false;
         }
 
-        // When persisting events with persist it is guaranteed that the
-        // persistent actor will not receive further commands between the
-        // persist call and the execution(s) of the associated event
-        // handler. This also holds for multiple persist calls in context
-        // of a single command.
-        context.getPersistenceProvider().persist(replicatedLogEntry,
-            new Procedure<ReplicatedLogEntry>() {
-                @Override
-                public void apply(final ReplicatedLogEntry param) throws Exception {
-                    context.getLogger().debug("{}: persist complete {}", context.getId(), param);
-
-                    int logEntrySize = param.size();
-                    dataSizeSinceLastSnapshot += logEntrySize;
-
-                    if (callback != null) {
-                        callback.apply(param);
-                    }
-                }
+        Procedure<ReplicatedLogEntry> persistCallback = persistedLogEntry -> {
+            context.getLogger().debug("{}: persist complete {}", context.getId(), persistedLogEntry);
+
+            dataSizeSinceLastSnapshot += persistedLogEntry.size();
+
+            if (callback != null) {
+                callback.apply(persistedLogEntry);
             }
-        );
+        };
+
+        if (doAsync) {
+            context.getPersistenceProvider().persistAsync(replicatedLogEntry, persistCallback);
+        } else {
+            context.getPersistenceProvider().persist(replicatedLogEntry, persistCallback);
+        }
+
+        return true;
     }
-}
\ No newline at end of file
+}